CN114967494A - Cloud digital twin workshop simulation system based on modular development - Google Patents
Cloud digital twin workshop simulation system based on modular development Download PDFInfo
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Abstract
Cloud digital twin workshop simulation system based on modular development comprises an equipment layer, an edge layer, a system layer and an application layer, wherein the equipment layer comprises various production equipment of an actual workshop, the edge layer comprises a data acquisition module and an equipment control module, and the main functions of the system are acquisition of equipment data and transceiving of control instructions. The system layer comprises a data processing module, a data storage module, a data analysis module, a data communication module, a logic function module and an event processing module. The application layer comprises an information display module, a digital twin simulation module and a 3D visual interaction module, can receive data information of the equipment to realize large-screen display of the data, can also carry out 3D simulation, and issues a control instruction. The 3D visual interaction module is used for packaging and designing main functions, and is convenient for developers to use and maintain. The system has good cross-platform performance and expansibility, can meet the requirement of quickly building a digital twin workshop, reduces the development cost, and effectively verifies the reasonability of the layout of the production workshop and the feasibility of the process flow.
Description
Technical Field
The invention relates to industrial internet and digital twin related technologies, in particular to a cloud digital twin workshop simulation system based on modular development.
Background
The manufacturing industry is a basic industry for promoting national industrialization and modernization, plays a leading role in the social and economic development of China, however, under the background that the international competition of the current manufacturing industry is increasingly fierced and the personalized demand of the consumer market is continuously increased, discrete manufacturing enterprises often have difficulties in quickly responding to the new demand of customers, flexibly customizing production and the like. The enterprise production line generally has the problems of unreasonable process layout, unstable product quality, repeated equipment resource investment, low production supervision level and the like caused by management and design defects, and needs to be transformed to an informatization direction urgently.
In the process of converting the manufacturing industry into informatization, the digital modeling management of the production resources of the manufacturing enterprises is an effective means. The method has the advantages that the flexibility of the production line is enhanced, the equipment layout of a production workshop is optimized, and the production design scheme is optimized by using production data through a digital approach, wherein the key point is the application of a virtual simulation technology. By means of a 3D development technology, a digital model and a visual simulation environment of a production line are built, and the design and optimization of the production line are completed in a virtual information space, so that the industrial simulation efficiency is improved, the building cost of a simulation scene is reduced, and the digital simulation supervision level of the manufacturing industry is improved.
Production simulation in the industrial field refers to simulating actual operation of a production line by using a visual 3D model, and visually displaying conditions of process flow, resource scheduling and the like in a production process. Through simulation results, problems existing in the production line are exposed, so that operations such as targeted structure adjustment, layout design and the like are performed, and the goal of optimizing production is finally achieved. However, currently mainstream industrial simulation software still has many limitations, including that a software system runs depending on a specific platform and cannot be remotely used across platforms; the simulation-oriented scene is single, the flexibility is lacked, and new requirements cannot be quickly responded; the software system occupies more resources, is not light enough and is not easy to expand; the hidden value cannot be extracted due to the lack of a data analysis module; the system development method is mostly based on the problems of flow, difficult transplantation, long development process, difficult code reuse, difficult maintenance and the like. Therefore, the development and upgrade of the industrial simulation related software system are urgently needed.
Aiming at the problems, on the basis of a mature internet related technology, a cloud digital twin workshop simulation system based on modular development is designed and realized, and the method has very important significance for improving the industrial simulation efficiency, reducing the construction cost of a simulation scene and filling up the research vacancy in the related field. The simulation analysis system is developed based on modularization, so that the code reuse rate is improved, and the maintenance and the expansion of developers are facilitated; the simulation scene strength is refined, the focus is transferred from the whole scene to each equipment model, and the digital workshop simulation scene is set up in a user-defined mode from the model to different scenes; an equipment model and a simulation scene storage mechanism are created, so that resource sharing is facilitated; opening an access port of external data, using data to drive a scene to run according to the idea of digital twinning, and matching with auxiliary monitoring equipment to perform real-time production monitoring; the production data is summarized through sorting and analysis, and the production analysis is assisted through a visual chart.
With the popularization of the digital twin concept, the research on the digital twin workshop in the current society is deepened, and many enterprises at home and abroad begin to research and develop a digital twin workshop simulation system suitable for industrial production. The 3D manufacturing simulation software which is popular abroad comprises Visual Components of Finland, PDPS of Germany and the like, the software has strong functions and can realize simulation of a production workshop, but the software needs to be operated based on a PC (personal computer) end, does not have cross-platform property, has high use cost and difficult manual operation, and is difficult to meet the requirement of quick simulation of some small and medium-sized enterprises. A plurality of scholars actively explore the implementation mode of the digital twin workshop in China. The front spinning workshop operation architecture based on the digital twin is proposed by the phyllotaxis and the like, the whole architecture of the digital twin workshop is explained, and verification is carried out in Unity (phyllotaxis, front spinning workshop operation architecture [ J ] based on the digital twin, manufacturing automation 2021,43(06): 130-. For the industrial robot intelligent production line simulation system based on the WebGL designed by the patent number CN113495542A, although the rendering module of a digital workshop is deployed at the cloud end by using the WebGL technology and cross-platform access is supported, the front-end code coupling degree is high and is not easy to transplant and maintain, only the front end and the back end are separately developed, the front-end 3D rendering module and the page code are not separated, the WebGL technology is complex, a developer needs to have a good graphics foundation and a programming foundation, and the development cost needs to be optimized. The system is mainly developed by a modularized idea, each functional module is developed and designed respectively, a lightweight cloud digital twin workshop simulation system is realized, and the requirements of a user for quickly editing a model, building a custom scene and carrying out real-time simulation monitoring analysis are met with extremely low development cost.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provides a cloud digital twin workshop simulation system based on modular development.
The invention is mainly developed by a modularized idea, and each functional module is encapsulated, so that not only the front end and the back end are separately developed, but also the 3D visual interaction module of the application layer is encapsulated, thereby reducing the code coupling degree and facilitating the use and maintenance of developers; the system is deployed at the cloud end by adopting a B/S architecture, and the equipment can perform cross-platform access through a browser; the system can render a 3D scene in a browser for digital display and simulation of a production workshop; a user can upload a model at will in a browser and carry out custom editing, and the edited model can be stored in a model library for later use; the user can use the model in the model base to carry out self-defined construction of the workshop scene, the actual production workshop can be restored to a great extent, and the adjusted digital workshop can be stored in the industrial scene base for later use; the user can view the equipment model and the digital workshop scene in a 3D view angle in an all-round way in a browser, and can manually drive the motion of the equipment model to simulate; the system provides an external data interface, can receive equipment state data of an actual production workshop, and drives a corresponding equipment model in a scene, so that digital twin simulation of the production workshop is realized; the system can perform statistical analysis processing on data in the production process, can display the running state of a production workshop, can also analyze the production process by utilizing a big data analysis technology, extracts data hiding value and optimizes the production flow.
The technical scheme adopted by the invention for solving the problems in the prior art is as follows:
cloud digital twin workshop simulation system based on modular development is characterized in that: the system comprises a device layer, an edge layer, a system layer and an application layer;
the equipment layer comprises production equipment of an actual production workshop, and equipment data can be uploaded and a control instruction of a system can be received through connection with the edge layer;
the edge layer comprises a data acquisition module and an equipment control module, performs data transmission with the equipment layer through an OPC UA protocol, can acquire information and running state data of production equipment in real time, transmits the equipment data to a system layer data processing module, can also receive a control instruction sent by the system layer event processing module, and sends a control signal to the production equipment through a PLC (programmable logic controller) for control;
the system layer comprises a data processing module, a data storage module, a data analysis module, a data communication module, a logic function module and an event processing module;
the data processing module is used for classifying, cleaning and processing the equipment data after receiving the equipment data acquired by the data acquisition module, and transmitting the equipment data to the data storage module after unifying the formats;
and the data storage module receives the equipment data processed by the data processing module and stores the equipment data in a classified manner. Storing relational data such as basic information of equipment into a relational database MySQL; storing the non-relational data such as the running state of the equipment into a non-relational database Redis; storing the equipment model file to a file storage system;
the data analysis module is used for reading the data in the data storage module, analyzing the data by adopting a big data algorithm, extracting useful values and sending analysis results to the data communication module;
the data communication module is used for receiving the analysis result from the data analysis module and the equipment data from the data storage module, transmitting the real-time data of the running state of the equipment through an MQTT message server, and sending the equipment information and the analysis result to the application layer digital twin simulation module through an Axios protocol; the control instruction transmitted by the digital twin simulation module can be received and forwarded to the logic function module;
the logic function module receives the control instruction transmitted by the data communication module, converts the control instruction into a specific control instruction through logic function processing and transmits the specific control instruction to the event processing module;
the event processing module receives the control instruction transmitted by the logic function module, communicates with the edge layer equipment control module and issues the control instruction;
the application layer comprises a digital twin simulation module, an information display module and a 3D visual interaction module;
the digital twin simulation module receives data of the data communication module on the system layer, transmits the data information of the equipment to the information display module for display after processing, and can also drive the 3D visual interaction module to perform 3D simulation;
the information display module receives the data of the digital twin simulation module and displays the data in a large-screen mode;
the 3D visual interaction module carries out packaging design on the main functional module, can carry out 3D rendering in a browser, supports a user to upload an equipment model and carry out online editing, supports the user to custom build a digital workshop scene, provides an interaction function to check, and can receive an instruction of the digital twin simulation module to carry out synchronous simulation through data driving.
Preferably, the production equipment comprises a mechanical arm, a conveyor belt and a processing workshop.
The method can meet the requirement of rapidly building a digital twin workshop, debugging and simulating the equipment model in a virtual scene, and effectively verifying the reasonability of the layout of the production workshop and the feasibility of the production process.
The system is deployed at the cloud based on the B/S architecture, 3D rendering is carried out in the browser by adopting the WebGL technology, the cross-platform performance is good, and a user can access the browser.
According to the invention, the packaging design is carried out on the main functions of the 3D visual interaction module in the aspect of codes, and the codes are optimized on the basis of realizing the target functions, so that the code amount in the development process is greatly reduced, development and maintenance are convenient for developers, the transportability of the codes is enhanced, the function library after packaging is adopted, the development cost is reduced, and the development process is simplified; .
The system supports users to upload and edit the models, sets the kinematic rules of the models, and stores the adjusted models to a cloud equipment model library; the system supports a user to set up a custom scene, and the set up scene can be stored in a cloud industrial scene library.
The system can receive real-time data of actual production workshop equipment, drive the model in the digital scene and realize synchronous simulation of the digital workshop and the actual workshop; and a control instruction can be issued, and the equipment movement of the actual workshop is controlled through the digital workshop.
The data analysis module of the invention adopts a big data analysis algorithm to analyze the data in the production process, thereby improving the utilization rate of the data value and optimizing the production process.
The invention has the advantages and positive effects that:
the system adopts a modularized development idea to encapsulate the WebGL-based 3D engine thread.js, so that the code amount is simplified, the code portability is enhanced, the system is decoupled from a front-end code, and development and maintenance are facilitated for developers on the basis of meeting system requirements; the system is deployed at the cloud, does not depend on a specific operating system, can be accessed by a user through a browser by using any equipment, and has a cross-platform property; the system has extremely high degree of freedom, supports the user to freely upload the model, randomly builds the scene, and can meet the requirement of the user on quickly building the scene for visual simulation; the system improves the utilization rate of data in the production process by acquiring, processing and analyzing the data, and can enhance the digitization, informatization and intelligentization degrees of the manufacturing industry; the system realizes synchronous simulation of a digital workshop and an actual workshop through data communication, is matched with auxiliary monitoring equipment, and meets the requirement of a user on remote visual monitoring of the workshop.
The invention has the advantages that: the cloud digital twin workshop simulation system based on modular development can be accessed only by a browser when in use, a user can upload a model, build a scene, connect data communication for synchronous simulation, and remotely monitor the operation condition of a production workshop; by using the system, scene construction can be rapidly carried out, the reasonability of workshop layout can be verified, simulation debugging can also be carried out, the feasibility of a production flow can be verified, and the debugging cost and risk in the production process can be reduced; the synchronous simulation of the scene and the analysis and display of the data can enable a user to monitor the production workshop more intuitively, and the overall management and control level of the workshop by the user can be improved.
Drawings
FIG. 1 is a block diagram of the system architecture of the present invention.
FIG. 2 is a diagram of the system operating environment of the present invention.
Fig. 3 is a functional packaging diagram of the 3D visual interaction module according to the present invention.
FIG. 4 is a diagram of a device model library constructed according to the present invention.
FIG. 5 is a diagram of an industrial scene library constructed by the invention.
FIG. 6 is a digital twin simulation diagram of the present invention.
FIG. 7 is a data analysis presentation of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
A cloud digital twin workshop simulation system based on modular development is characterized in that a system structure diagram is shown in figure 1, and a system operation environment is shown in figure 2. The system consists of an equipment layer, an edge layer, a system layer and an application layer, wherein the equipment layer comprises various equipment in a production workshop, the edge layer comprises a data acquisition module and an equipment control module, the system layer comprises a data processing module, a data storage module, a data analysis module, a data communication module, a logic function module and an event processing module, and the application layer comprises an information display module, a digital twin simulation module and a 3D visual interaction module. The data of the equipment layer is collected by the edge layer and then transmitted to the system layer, the system layer processes, stores and analyzes the data and then transmits the data to the application layer, the application layer can display the equipment information and also can carry out 3D simulation, a digital twin workshop is built, and the system layer can also issue a control instruction and transmit the data to the edge layer for control after processing.
The specific embodiments of the invention are as follows:
the equipment layer is equipment in an actual production workshop and comprises a mechanical arm, a transmission belt and a processing lathe, and the equipment layer is in physical connection with the edge layer through a field bus to carry out bidirectional data transmission.
The edge layer comprises a data acquisition module and an equipment control module. The data acquisition module uses an OPC UA server to transmit data, and the equipment control module is a PLC (programmable logic controller) device and can receive a control instruction of a system layer and control equipment of an equipment layer.
The back end of the system layer uses java programming language, adopts mainstream Springboot framework for development, and mainly realizes a data processing module, a data storage module, a data analysis module, a data communication module, a logic function module and an event processing module. The data processing module is used for cleaning after receiving the equipment data, unifying the format and generating an entity object for facilitating subsequent operation; the data storage module receives the processed data, stores the processed data in a classified manner, stores basic information data of the equipment, such as equipment name, equipment model, equipment ID and the like, into a relational database MySQL, ensures the logical relevance among the data, stores state data of the equipment in the running process, such as mechanical arm pose, conveyor belt switch state, the running state of a processing lathe and the like, into a non-relational database Redis in a key value pair manner, and meets the requirement of fast real-time reading and writing; the data analysis module can perform basic statistical analysis on the data, run a big data analysis algorithm to extract the data value and optimize the production flow; the data communication module is used for communicating the equipment information data which does not need to be read frequently with a front-end application layer through Axios and communicating the equipment state data which needs to be read frequently in real time through an MQTT message server; the logic function module executes corresponding logic functions according to the control instructions sent by the application layer, converts the corresponding logic functions into corresponding event control instructions and transmits the event control instructions to the event processing module; and the event processing module receives the control command sent by the logic function module and sends the control command to the edge layer equipment control module.
The front end of the application layer takes a Web page end as a display window, uses html, css and JavaScript programming languages, and adopts an Vue frame for development. The system comprises a digital twin simulation module, an information display module and a 3D visual interaction module.
The digital twin simulation module comprises multiple logic functions, can transmit data information to the information display module for display, and can also drive the 3D visual interaction module to perform real-time 3D simulation.
The 3D visual interaction module uses a JavaScript programming language and is based on a WebGL framework, and the main functions of the module packaging design comprise 3D rendering, interface display, model editing, scene building, mouse interaction and data driving, and are shown in figure 3.
The 3D rendering function is to render a 3D scene in a browser, which can view an equipment model and a digital workshop scene in all directions at a stereoscopic viewing angle. Different from traditional 3D simulation software, the system does not need to install software, a user can access the system only through a browser, and the system has good cross-platform performance.
The interface display function refers to the display of some function buttons and information labels in a digital workshop scene, can improve the interactive experience of users,
the model editing function supports a user to upload models of various file formats, including mainstream formats such as STL, FBX, glTF and OBJ, the uploaded models can be displayed in a three-dimensional mode through a 3D rendering function, and the user can adjust the models on line, including setting a coordinate system, changing material textures, setting a connection relation, setting a kinematic simulation rule and the like. The model adjusted by the user can be uniformly stored to a cloud database in a JSON form and added to an equipment model library, and sharing and calling are facilitated. As shown in fig. 4, the user may search for models in the device model library, view basic information of each model, preview rendering effect, or download a model file to local.
The scene building function supports a user to build a digital workshop scene in a user-defined mode, the user can lead in models in an equipment model library into the scene, parameters such as the position, the angle and the zooming of the models are set, the user can freely debug the models in the scene, for example, the joint angle of a mechanical arm is adjusted, the working state of a clamping jaw tool is set, the conveying distance of a conveying belt is set, and the like, so that preliminary simulation is carried out, and the scene of a real production workshop is simulated and restored. The scenes adjusted by the user can also be stored in a cloud database in a JSON form and added into an industrial scene library, so that the sharing and the calling are convenient. As shown in fig. 5, a user may retrieve scenes in the industrial scene library, view basic information of each scene, preview a rendering effect, edit again, or download a scene file to a local place.
The mouse interaction function means that a user can interact with a digital workshop scene through a mouse, and comprises interactive operations of adjusting a visual angle, selecting an equipment model to view information, clicking a function button to debug and the like.
The data driving function can drive the digital workshop equipment model to move by using the state data of actual production workshop equipment, and the user only needs to set a designated model movement joint and fit a data communication interface to realize the effect of synchronous simulation, as shown in fig. 6.
The information display module is developed by using ElementUI componentization, is matched with Echarts, counts some key information in the system in a big data board mode, and displays the key information in a visual chart mode, as shown in FIG. 7. The chart data is updated according to a certain frequency, and a user can know the running information of the equipment in the access system in real time.
The operation condition of the whole system is described above, and the modular design concept not only separates the front end from the back end, but also decouples each functional module, thereby optimizing the code amount, improving the portability of programs and facilitating the use and maintenance; the system is deployed at the cloud side by the B/S system architecture, and the cross-platform performance of the system is enhanced without depending on a specific operating platform; the existence of the equipment model library and the industrial scene library is convenient for a user to quickly set up a workshop scene, so that the simulation time and cost are greatly saved; the 3D rendering module enables a user to observe the operation condition of the workshop in a three-dimensional and visual manner, and improves the management and control degree of the workshop by the user in cooperation with data analysis display; the cloud database and the message server provide guarantee for efficient communication of data, and bidirectional connection between the digital workshop and the actual workshop is achieved. The whole system enables the construction of the digital twin workshop to be more convenient, simpler and more effective, and provides technical support for digitalization, informatization and networked transformation of manufacturing industry.
The embodiments described in this specification are merely illustrative of implementations of the inventive concept and the scope of the present invention should not be considered limited to the specific forms set forth in the embodiments but rather by the equivalents thereof as may occur to those skilled in the art upon consideration of the present inventive concept.
Claims (7)
1. Cloud digital twin workshop simulation system based on modular development is characterized in that: the system comprises a device layer, an edge layer, a system layer and an application layer;
the equipment layer comprises various production equipment in an actual production workshop, and can upload equipment data and receive a control instruction of a system by being connected with the edge layer;
the edge layer comprises a data acquisition module and an equipment control module, performs data transmission with the equipment layer through an OPC UA protocol, can acquire information and running state data of production equipment in real time, transmits the equipment data to a system layer data processing module, can also receive a control instruction sent by the system layer event processing module, and sends a control signal to the production equipment through a PLC (programmable logic controller) for control;
the system layer comprises a data processing module, a data storage module, a data analysis module, a data communication module, a logic function module and an event processing module;
the data processing module is used for classifying, cleaning and processing the equipment data after receiving the equipment data acquired by the data acquisition module, and transmitting the equipment data to the data storage module after unifying the formats;
and the data storage module receives the equipment data processed by the data processing module and stores the equipment data in a classified manner. Storing the relational data such as basic information of the equipment into a relational database; storing non-relational data such as the operating state of the device in a non-relational database; storing the equipment model file to a file storage system;
the data analysis module is used for reading the data in the data storage module, analyzing the data by adopting a big data algorithm, extracting useful values and sending an analysis result to the data communication module;
the data communication module is used for receiving the analysis result from the data analysis module and the equipment data from the data storage module, transmitting the real-time data of the equipment operation state through the MQTT message server, and sending the equipment information and the analysis result to the application layer digital twin simulation module through an Axios protocol; the control instruction transmitted by the digital twin simulation module can be received and forwarded to the logic function module;
the logic function module receives the control instruction transmitted by the data communication module, converts the control instruction into a specific control instruction through logic function processing and transmits the specific control instruction to the event processing module;
the event processing module receives the control instruction transmitted by the logic function module, communicates with the edge layer equipment control module and issues the control instruction;
the application layer comprises a digital twin simulation module, an information display module and a 3D visual interaction module;
the digital twin simulation module receives data of the data communication module on the system layer, transmits equipment data information to the information display module for display after processing, and can also drive the 3D visual interaction module to perform 3D simulation;
the information display module receives the data of the digital twin simulation module and displays the data in a large-screen mode;
the 3D visual interaction module is used for packaging and designing the main functional module, 3D rendering can be carried out in a browser, a user is supported to upload an equipment model and edit the equipment model on line, the user is supported to set up a digital workshop scene in a user-defined mode, an interaction function is provided for checking, and a command of the digital twin simulation module can be received and synchronous simulation is carried out through data driving.
2. The cloud digital twin plant simulation system based on modular development of claim 1, wherein: the production equipment comprises a mechanical arm, a conveying belt and a processing workshop.
3. The cloud digital twin plant simulation system based on modular development of claim 1, wherein: the system is deployed at the cloud based on the B/S architecture, 3D rendering is carried out in a browser by adopting a WebGL technology, the cross-platform performance is good, and a user can access the system through the browser.
4. The cloud digital twin plant simulation system based on modular development of claim 1, wherein: the main functions of the 3D visual interaction module are packaged and designed in terms of codes, the codes are optimized on the basis of realizing target functions, the code amount in the development process is greatly reduced, development and maintenance are facilitated for developers, the transportability of the codes is enhanced, the function library after packaging is achieved, the development cost is reduced, and the development process is simplified.
5. The cloud digital twin plant simulation system based on modular development of claim 1, wherein: the system supports a user to upload and edit the model, sets the kinematic rule of the model, and stores the adjusted model to a cloud equipment model library; the system supports a user to set up a custom scene, and the set up scene can be stored in a cloud industrial scene library.
6. The cloud digital twin plant simulation system based on modular development of claim 1, wherein: the system can receive real-time data of actual production workshop equipment, drive a model in a digital scene and realize synchronous simulation of a digital workshop and the actual workshop; and a control instruction can be issued, and the equipment movement of the actual workshop is controlled through the digital workshop.
7. The cloud digital twin plant simulation system based on modular development of claim 1, wherein: the data analysis module adopts a big data analysis algorithm to analyze data in the production process, so that the data value utilization rate can be improved, and the production process is optimized.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115373290A (en) * | 2022-10-27 | 2022-11-22 | 极晨智道信息技术(北京)有限公司 | Digital twin-based digital workshop simulation method and system |
| CN117171237A (en) * | 2023-11-02 | 2023-12-05 | 无锡雪浪数制科技有限公司 | Real-time statistical data visualization method and system in discrete simulation software |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115373290A (en) * | 2022-10-27 | 2022-11-22 | 极晨智道信息技术(北京)有限公司 | Digital twin-based digital workshop simulation method and system |
| CN117171237A (en) * | 2023-11-02 | 2023-12-05 | 无锡雪浪数制科技有限公司 | Real-time statistical data visualization method and system in discrete simulation software |
| CN117171237B (en) * | 2023-11-02 | 2024-01-26 | 无锡雪浪数制科技有限公司 | Real-time statistical data visualization method and system in discrete simulation software |
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